458 results match your criteria: "Child Health Research Center.[Affiliation]"

Purpose: To estimate the rate of ambulatory care use among postpartum persons by rurality of residence and pregnancy-related conditions.

Methods: We used Maine Health Data Organization's All Payer Claims Data for persons who delivered between 2007 and 2019 (N = 121,905). We estimated rates of ambulatory care (nonemergency department outpatient health care) utilization during the first 24 months' postpartum by level of rurality (urban, large rural, small rural, and isolated rural) and by pregnancy-related conditions (prenatal depression, hypertensive disorders of pregnancy, and gestational diabetes).

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Background: Electronic health record (EHR) data are an underused source for lactation-related research. The validity of ICD-10-CM-coded lactational mastitis is unknown.

Methods: We assessed lactational mastitis diagnosis code validity by medical record review.

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Renin is crucial for blood pressure regulation and electrolyte balance, and its expressing cells arise from Forkhead box D1-positive (Foxd1) stromal progenitors. However, factors guiding these progenitors toward renin-secreting cell fate remain unclear. Tcf21, a basic helix-loop-helix (bHLH) transcription factor, is essential in kidney development.

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Piezo, Nephrocyte Function, and Slit Diaphragm Maintenance in Drosophila.

J Am Soc Nephrol

October 2024

Center for Precision Disease Modeling, Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland.

Article Synopsis
  • The Piezo gene encodes a protein that helps cells sense pressure, crucial for kidney function and maintaining filtration structures, but its specific role in kidneys is not fully understood.
  • Researchers used Drosophila nephrocytes, similar to human kidney cells, to investigate how the Piezo gene affects cell function and filtration by creating loss-of-function models.
  • The results indicated that Piezo is essential for proper nephrocyte function and the integrity of the filtration structure, with defects leading to protein issues and disrupted calcium balance in the cells.
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  • Early life gut microbiomes significantly impact brain and immune system development, with probiotics suggested as a way to enhance health through microbiome modification.
  • This study investigates the effects of maternal probiotic exposure during pregnancy and breastfeeding on inflammation in breastmilk, variations in maternal and infant microbiomes, and infant neurodevelopment.
  • Results indicate that maternal probiotics are linked to lower breastmilk inflammation markers and changes in infant gut microbiome, as well as improved recognition memory responses in infants at 6 months old.
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  • The study investigated the link between genetic variations in the 9q21 chromosome region and pelvic organ prolapse (POP) in women from Northwestern China.
  • Researchers compared 241 women with POP to 268 healthy controls, analyzing ten specific single nucleotide polymorphisms (SNPs) across five genes.
  • Three SNPs (rs2297002, rs7450, and rs3814535) showed significant associations with POP risk, indicating that these genetic markers could help in early diagnosis and understanding POP's underlying causes.
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Article Synopsis
  • HIV-associated nephropathy (HIVAN) primarily affects individuals of African descent with high HIV-1 viral loads, and while antiretroviral therapies (ART) have improved outcomes, treating children and adolescents with HIV (CALWH) remains a significant challenge worldwide.
  • Over 2.5 million CALWH are at high risk for developing HIVAN, and existing research on the disease largely stems from studies on transgenic mice and adults, highlighting potential differences in risk factors and health outcomes for younger patients.
  • The article discusses advancements in understanding HIVAN's pathogenesis over the past 40 years, particularly the role of genetic factors like the APOL1 gene, and emphasizes the need for further research on renal inflammation, the
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Genetic susceptibility to acute viral bronchiolitis.

J Infect Dis

September 2024

Research Unit of Clinical Medicine, Medical Research Center Oulu, University of Oulu, and Department of Children and Adolescents, Oulu University Hospital, Oulu, Finland.

Article Synopsis
  • Acute viral bronchiolitis is a leading cause of hospitalizations in infants and may increase the risk of developing asthma later in life, indicating a potential genetic link between the two.
  • A genome-wide association study analyzed over 1,400 infants with bronchiolitis and identified significant genetic variants in GSDMB and CDHR3, both associated with respiratory issues and asthma.
  • Findings suggest that these genetic variants may increase susceptibility to bronchiolitis caused by various viruses, and severe cases in infancy could either lead to asthma or indicate a genetic predisposition for developing it.
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Paricalcitol prevents MAPK pathway activation and inflammation in adriamycin-induced kidney injury in rats.

J Pathol Transl Med

September 2024

Laboratory of Renal Physiology, Department of Physiology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil.

Background: Activation of the mitogen-activated protein kinase (MAPK) pathway induces uncontrolled cell proliferation in response to inflammatory stimuli. Adriamycin (ADR)-induced nephropathy (ADRN) in rats triggers MAPK activation and pro-inflammatory mechanisms by increasing cytokine secretion, similar to chronic kidney disease (CKD). Activation of the vitamin D receptor (VDR) plays a crucial role in suppressing the expression of inflammatory markers in the kidney and may contribute to reducing cellular proliferation.

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Education and employment among patients with childhood-onset epilepsy in adulthood: A population-based cohort study.

Epilepsy Behav

October 2024

Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland; Tampere Center for Child, Adolescent and Maternal Health Research (TamCAM), Tampere University, Tampere, Finland; Department of Pediatric Neurology, Tampere University Hospital, Tampere, Finland.

Objective: This study explored the association of childhood-onset epilepsy (COE) with educational attainment, adulthood employment, and income.

Methods: A population-based cohort of 312 children with COE was identified from Tampere University Hospital, Finland. Population Register Center formed a matched random population sample of 1248 children without COE as a reference cohort.

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Methods for constructing and evaluating consensus genomic interval sets.

Nucleic Acids Res

September 2024

Department of Genome Sciences, School of Medicine, University of Virginia, Charlottesville, VA 22908, USA.

The amount of genomic region data continues to increase. Integrating across diverse genomic region sets requires consensus regions, which enable comparing regions across experiments, but also by necessity lose precision in region definitions. We require methods to assess this loss of precision and build optimal consensus region sets.

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Methods for evaluating unsupervised vector representations of genomic regions.

NAR Genom Bioinform

September 2024

Department of Genome Sciences, School of Medicine, University of Virginia, Charlottesville, VA 22908, USA.

Representation learning models have become a mainstay of modern genomics. These models are trained to yield vector representations, or embeddings, of various biological entities, such as cells, genes, individuals, or genomic regions. Recent applications of unsupervised embedding approaches have been shown to learn relationships among genomic regions that define functional elements in a genome.

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Background: Men exhibit higher prevalence of modifiable risk factors, such as smoking and alcohol consumption, leading to greater cancer incidence and lower survival rates. Comprehensive evidence on global cancer burden among men, including disparities by age group and country, is sparse. To address this, the authors analyzed 30 cancer types among men in 2022, with projections estimated for 2050.

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Background: As biological data increase, we need additional infrastructure to share them and promote interoperability. While major effort has been put into sharing data, relatively less emphasis is placed on sharing metadata. Yet, sharing metadata is also important and in some ways has a wider scope than sharing data themselves.

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An efficient inducible model for the control of gene expression in renin cells.

Am J Physiol Renal Physiol

September 2024

Department of Pediatrics, Child Health Research Center, University of Virginia, Charlottesville, Virginia, United States.

Fate mapping and genetic manipulation of renin cells have relied on either noninducible lines that can introduce the developmental effects of gene deletion or bacterial artificial chromosome transgene-based inducible models that may be prone to spurious and/or ectopic gene expression. To circumvent these problems, we generated an inducible mouse model in which is under the control of the endogenous gene, an independent marker of renin cells that is expressed in a few extrarenal tissues. We confirmed the proper expression of using ; mice in which Akr1b7/renin cells become green fluorescent protein (GFP) upon tamoxifen administration.

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Inhibition of Renin Expression Is Regulated by an Epigenetic Switch From an Active to a Poised State.

Hypertension

September 2024

Department of Pediatrics, Child Health Research Center (J.P.S., R.P., S.M., M.L.S.S.-L., R.A.G.), University of Virginia, Charlottesville, VA.

Background: Renin-expressing cells are myoendocrine cells crucial for the maintenance of homeostasis. Renin is regulated by cAMP, p300 (histone acetyltransferase p300)/CBP (CREB-binding protein), and Brd4 (bromodomain-containing protein 4) proteins and associated pathways. However, the specific regulatory changes that occur following inhibition of these pathways are not clear.

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Fast clustering and cell-type annotation of scATAC data using pre-trained embeddings.

NAR Genom Bioinform

September 2024

Center for Public Health Genomics, School of Medicine, University of Virginia, Charlottesville, VA 22908, USA.

Data from the single-cell assay for transposase-accessible chromatin using sequencing (scATAC-seq) are now widely available. One major computational challenge is dealing with high dimensionality and inherent sparsity, which is typically addressed by producing lower dimensional representations of single cells for downstream clustering tasks. Current approaches produce such individual cell embeddings directly through a one-step learning process.

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Article Synopsis
  • The study aimed to assess how using reversible postpartum contraception impacts the likelihood of recurring pregnancy issues in subsequent pregnancies and whether this effect is connected to longer interpregnancy intervals (IPIs).
  • Researchers analyzed data from Maine on women who had live births between 2007 and 2019, focusing on conditions like prenatal depression, hypertensive disorders, and gestational diabetes.
  • Findings showed that while postpartum contraception use was linked to longer IPIs, it did not decrease the recurrence risk of the targeted pregnancy conditions, highlighting a gap in healthcare provision.
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A novel syndrome of silent rhinovirus-associated bronchoalveolitis in children with recurrent wheeze.

J Allergy Clin Immunol

September 2024

Beirne Carter Center for Immunology Research, University of Virginia School of Medicine, Charlottesville, Va; Division of Asthma, Allergy, and Immunology, Department of Medicine, University of Virginia School of Medicine, Charlottesville, Va; Department of Microbiology, University of Virginia School of Medicine, Charlottesville, Va.

Background: Rhinovirus (RV) infections trigger wheeze episodes in children. Thus, understanding of the lung inflammatory response to RV in children with wheeze is important.

Objectives: This study sought to examine the associations of RV on bronchoalveolar lavage (BAL) granulocyte patterns and biomarkers of inflammation with age in children with treatment-refractory, recurrent wheeze (n = 616).

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